Panasonic KX-UT248RU / KX-UT248RU-B (serv.man3) Service Manual ▷ View online
33
KX-UT248RU/KX-UT248RU-B
Table-4
Note:
Refer to waveform (4) in Waveform (P.69) .
No. 3
SDRAM Data Error
[Check Points]
Measure the SD_CLK signal at Pin 38 of IC502.
Is it 72MHz?
See the communication waveform (4).
Is it 72MHz?
See the communication waveform (4).
[Related Parts]
IC502,DL502,R501,R502,R509,R510,R512,R524,R588,
C503,C505,C506,C507,C509,C510,C511,C512,C516,C517,C518,C519,
C548,C550,C552,C571,C573,
R513,R514,R515,R516,R517,R518,R519,R520,R521,R522
C503,C505,C506,C507,C509,C510,C511,C512,C516,C517,C518,C519,
C548,C550,C552,C571,C573,
R513,R514,R515,R516,R517,R518,R519,R520,R521,R522
[Related Circuit]
34
KX-UT248RU/KX-UT248RU-B
Table-5
No. 6
ASIC Data Error
[Check Points]
Measure the ASICCLK signal at Pin 1 of IC204.
Flat Cable(Between Main PCB and Ope PCB)
For details to 9.3.1 ASIC Data Error. (P. 39 )
Flat Cable(Between Main PCB and Ope PCB)
For details to 9.3.1 ASIC Data Error. (P. 39 )
[Related Parts]
CN101,L103,L104,L106,R168,R169,C145,C168,
CN201,L201,L202,L203,L204,L205,C201,C202,C206,
IC204,L209,C205,C215,C216,C217,C218,C219,C220
CN201,L201,L202,L203,L204,L205,C201,C202,C206,
IC204,L209,C205,C215,C216,C217,C218,C219,C220
[Related Circuit]
35
KX-UT248RU/KX-UT248RU-B
Table-6
No. 10,11
CODEC Communication Error
[Check Points]
Measure the voltage at pin17 of IC103. Is it 3.3V?
Measure the voltage at pin14 of IC103. Is it 1.2V?
Measure the voltage at pin8 of IC103.Is it 3.3V?
Measure the voltage at pin14 of IC103. Is it 1.2V?
Measure the voltage at pin8 of IC103.Is it 3.3V?
Measure the clock frequency at pin69 of IC103.
Is it 16.384MHz?
Measure the UART2_TX and UART2_RX at pin10,11 of IC103.
See the communication waveform(9,10).
Is it 16.384MHz?
Measure the UART2_TX and UART2_RX at pin10,11 of IC103.
See the communication waveform(9,10).
[Related Parts]
IC103,DL102,C111,IC102,C107,C101,C104,C148
R149,C173
R149,C173
X101,R110,R111,C1001,C1002,R105,R113,R114,R118
R102
R102
[Related Circuit]
C106
0.22u
C109
100p
SPP
001:4D
DG
DG
C105
0.22u
C131
NC
SPAMPEN
001:9D
C130
NC
C108
100p
SPN
001:4D
R121
220
C136
NC
NC
R123
2.2k
R128
0
C110
100p
R120
220
R107
470
D102
R129
0
IC101
1
STBY
2
NC
3
IN+
4
IN-
5
OUT+
6
VDD
7
GND
8
OUT-
9
FIN
D101
R140
470
R134
470
C149
100p
R145
NC
C167
NC
C156
NC
C162
NC
C164
NC
C124
0.47u
C125
0.47u
MICN
MICP
MIP
MIN
3.3VA
DL102
1
2
3
3.3VA_F
C111
10u
IC102
1
NC
2
GND
4
VDD
5
VOUT
3
CE
C189
10u
DG
DG
DG
C107
10u
DG
DG
R103
0
DG
SPIM_CLK
SPIM_MOST
SPIM_CS0
SPIM_MISO
DG
DG
R105
4.7k
BT_FS
001:10F
BT_DIN
001:10F
BT_DOUT 001:10E
R109
150
R110
1M
DG
R111
470
C172
1u
C174
1u
R108
470
C143
100p
DG
C144
100p
C119
1u
C120
1u
DG
C134
100p
C142
100p
C122
1u
C121
1u
MIN
001:4D
MIP
001:4D
DG
R149
100
CD_nRST
001:7C
C173
0.01u
C116
0.1u
C117
100p
C112
0.1u
C114
100p
C127
0.1u
C132
100p
DG
DG
C171
0.1u
C175
100p
DG
DG
C180
100p
C182
0.1u
C185
100p
C187
0.1u
C178
10u
C198
0.1u
C184
100p
DG
C197
0.1u
C181
100p
C186
100p
C1000
0.1u
C183
100p
C199
0.1u
C196
0.1u
DG
C188
100p
C123
100p
C126
0.1u
DG
C179
100p
C190
0.1u
UART2_TX
001:5F
UART2_RX
001:5F
R102
150
C1004
0.1u
C1003
0.1u
C1005
0.1u
DG
C1006
0.1u
DG
DG
R112
NC
3.3VA_F
3.3VA
R114
150
R118
150
R117
NC
R119
NC
R113
150
R124
150
3.3VA_F
DG
R136
150
R137
150
150
X101
16.384M
16.384M
1.2VA
ZL_RX
ZL_TX
AG
AG
AG
AG
AG
AG
AG
AG
BT_BCLK
001:10E
R104
0
R106
0
IC103
29
GPIO5
30
GPIO6
31
SPIS_MOSI
32
*SPIS_CS
33
SPIS_MISO
34
SPIS_CLK
35
VSSIO2
36
VDDIO2
37
SPIM_CLK
38
SPIM_MOSI
39
VSSCORE2
40
VDDCORE2
41
*SPIM_CS0
42
*SPIM_CS1
43
SPIM_MISO
44
GPIO7
45
GPIO8
46
GPIO9
47
GPIO10
54
VDDIO3
55
P0P_CLKO
56
P0PCMO
57
*P0FP/P0ENA1
58
VSSCORE3
59
VDDCORE3
60
P0PCMI
61
NC9
62
PCM_LBCI
63
VSSDPLL
64
VDDDPLL
65
PCM_CLKI
66
VDDOSC
67
VSSOSC
68
VDDOSCIO
69
OSCO
70
OSCI
71
DVSSAPLL
72
DVDDAPLL
79
C0_DACO-
80
C0_AVDD
81
C0_AVSS
82
C0_BFO+
83
C0_ADCI-
84
C0_ADCI+
85
C0_BFO-
86
AGUARD
87
BIAS_VCM
88
BIAS_RF+
89
BIAS_RF-
90
TEST1
91
TEST2
92
C1_BFO-
93
C1_ADCI+
94
C1_ADCI-
95
C1_BFO+
96
C1_AVSS
97
C1_AVDD
4 TMS
5 TCK
6 TDO
7 DGUARD
8 *RST
9 IC
10 UART_RX
11 UART_TX
12 I2S_SCK/P1NA2
13 VSSCORE1
14 VDDCORE1
15 I2S_MCLK/P1P_CLKI/O
16 VSSIO1
17 VDDIO1
18 I2S_LRCK/*P1FP/P1ENA1
19 I2S_SDI/O/P1PCMO
20 I2S_SDI/P1PCMI
21 GPIO0
22 GPIO1
26
NC4
27
GPIO3
28
GPIO4
48
P0ENA2
49
NC5
50
NC6
51
NC7
52
NC8
53
VSSIO3
73
AVSSAPLL
74
AVDDAPLL
75
NC10
76
NC11
77
NC12
78
C0_DACO+
98
C1_DACO-
99
C1_DACO+
100
NC13
1 NC1
2 *TRST
3 TDI
23 GPIO2
24 NC2
25 NC3
C101
22u
C104 22u
C148
0.01u
R122
2.2k
R116
330
C103
10u
C1001
12p
C1002
15p
C115
1u
C113
1000p
C118
NC
ST3
ST2
ST1
ST0
36
KX-UT248RU/KX-UT248RU-B
Table-7
No. 12
BT Module Error
[Check Points]
1. Measure the voltage at Pin27 of IC506.
Is it about 3.3V?
2. Measure the communication signal between IC503 and IC506(BT Module) at Pin6 and 9 of
IC506.
See the communication waveform (26), (28).
See the communication waveform (26), (28).
[Related Parts]
C559,C560
IC506,R531,R593,R599
IC506,R531,R593,R599
[Related Circuit]
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